DIPLOMA IN ENGINEERING I YEAR

GOVERNMENT OF TAMILNADU DIRECTORATE OF TECHNICAL EDUCATION DIPLOMA IN ENGINEERING I YEAR SEMESTER SYSTEM L - SCHEME 2011-2012 II SEMESTER ENGINEERING GRAPHICS - II CURRICULUM DEVELOPMENT CENTER

STATE BOARD OF TECHNICAL EDUCATION & TRAINING, TAMILNADU DIPLOMA IN ENGINEERING - SYLLABUS L-SCHEME (Implements from the Academic Year 2011-2012 on wards) Course Name : Subject Code : 22006 Semester : II Semester All Branches of Diploma in Engineering and Technology and Special Programmes except DMOP, HMCT and Film & TV Subject Title : ENGINEERING GRAPHICS II Objective At the end of the practice the students will be able, To state the importance of drawing. To draw the development of surfaces. To draw projection of solids. To draw sectional views of solids and true shape. To convert orthographic views into isometric drawing. SCHEME OF INSTRUCTION AND EXAMINATION Subject Instruction Examination Hours / Hours / Week Semester Marks ENGINEERING GRAPHICS - II 6 96 Internal Examination Total Duration 25 75 100 3 Hrs. TOPICS AND ALLOCATION Sl.No. Topics Hours. 1 Development of surfaces 18 Hrs. 2 Projection of solids 18 Hrs. 3 Section of Solids 18 Hrs. 4 Isometric projections 33 Hrs. Test 9 Hrs. CDC- DOTE ENGINEERING GRAPHICS II Page 2 of 9

DETAILED SYLLABUS Unit-1 18 Hrs. 1.1 Development of surfaces 1.1.1 Need for preparing development drawing with reference to sheet metal work - Development of cube, cylinder, prism and pyramids, frustum of pyramids and cones Exercises in triangular, square, pentagon and hexagon prisms and pyramids, cylinder and cone. 1.1.2 Development of T-pipe, elbow, ducts, tray, lamp shade and funnel. Unit-2 18 Hrs. 2.1 Projection of solids 2.1.1 Introduction - important terms - classification of solids triangular and hexagonal prisms and pyramids - solids of revolution cylinder and cone. 2.1.2 Projections of solids in simple positions parallel to one plane and perpendicular to other plane - projections of solids with axis inclined to HP and parallel to VP - projections of solids with axis inclined to VP and parallel to HP - Projections of solids with axis parallel to both planes - exercises. Unit - 3 18 Hrs. 3.1 Section of Solids 3.1.1 Introduction - section planes - apparent section - true section - sectional view - need for sectional view - cutting plane - cutting plane line. 3.1.2 Section plane perpendicular to VP and parallel to HP - section plane perpendicular to HP and parallel to VP - section plane perpendicular to VP and inclined to HP - section plane perpendicular to HP and inclined to VP Section of solids in simple positions parallel to one plane and perpendicular to other plane - axis parallel to both planes showing true shape of section exercises. CDC- DOTE ENGINEERING GRAPHICS II Page 3 of 9

Unit - 4 4.1 Isometric projections 33 Hrs. 4.1.1 Introduction isometric view - isometric projection difference between isometric view and isometric projection - isometric scale - methods of drawing an isometric view- box method. 4.1.2 Angles in Isometric view irregular curves in isometric drawing - circles in isometric method four centre method for drawing an ellipse - arcs of circles in isometric Draw the isometric view of the object from the given orthographic view - exercises. TEST Text Books 1. Gill P.S., Engineering drawing, S.K.Kataria & Sons. 2. Bhat N.D., Engineering drawing, Charotar Publishing House. 9 Hrs. Reference Books 1. Gopalakrishnan.K.R., "Engineering Drawing", (Vol.I and Vol.II), Dhanalakshmi publishers, Edition 2, 1970 2. Venugopal.K, Sreekanjana G, Engineering Graphics New Age International Publishers. 3. K V Nataraajan A Text Book of Engineering Drawing 4. Thomas E.French, Charles J.Vierck, Robert J.Foster, Engineering drawing and graphic technology, McGraw Hill International Editions. 5. Barkinson & Sinha, "First Year Engineering Drawing", Pitman Publishers. 6. Shah/Rana, Engineering Drawing, Pearson Longman. CDC- DOTE ENGINEERING GRAPHICS II Page 4 of 9

Learning Structure: ENGINEERING GRAPHICS II II Semester Problem To acquire the skill of visualizing, interpreting and drawing the development of solids and components - projection of solids section of solids and isometric views. Procedure Read, understand, visualize, interpret and draw development of surfaces - projection of solids section of solids and isometric views Principles Development of surfaces - Projection of solids sectional views - Isometric projection. Concept Reference planes (HP,VP) - locus of points - convention of lines - polygon as per IS Code. Facts Various objects, geometric entities, line, arc, circles, drawing instruments CDC- DOTE ENGINEERING GRAPHICS II Page 5 of 9

Board Examination QUESTION PATTERN Time: 3 Hrs. Max.Marks: 75 Part A (Answer any three questions. Each question carries FIFTEEN marks.) 3 X 15 = 45 1. One question from development of surfaces. 2. Two questions from projection of solids. 3. One question from section of solids. Part B 30 marks 4. Draw isometric view of the component (The object must have inclined and curved parts). Internal Marks Class work - submission of drawing file - 10 marks Test (including model examination) - 10 marks Attendance - 5 marks Total - 25 marks 25 marks CDC- DOTE ENGINEERING GRAPHICS II Page 6 of 9

ENGINEERING GRAPHICS - II MODEL QUESTION PAPER - 1 Time : 3Hours Max. Marks : 75 [N.B. (1) First angle projection is to be followed. (2) All the questions are to be answered in drawing sheet supplied. (3) All dimensions are in mm. (4) Credit will be given for neatness.] PART-A (Answer any three questions. Each question carries fifteen marks.) 3 X 15 = 45 1. Draw the development of Duct shown in Fig. 1. Fig. 1 2. Draw the projection of a pentagonal prism of base side 20 mm, axis 35 mm when it is resting on the HP on its base with of the edges of the base inclined at 30 O to the VP. 3. A cone of base diameter 60 mm and altitude 80 mm rests on the HP with its axis inclined to the HP and parallel to the VP. Draw its front and top views. 4. A hexagonal prism of base side 40 mm and axis length 80 mm is lying on the HP on one of its rectangular faces with its axis inclined at 60 o to the VP. It is cut by a plane of which makes 45 o with the xy. The cutting plane nearest to the HP is 14 m above it. Draw the front view, sectional top view and the true shape of the section. PART-B 30 marks CDC- DOTE ENGINEERING GRAPHICS II Page 7 of 9

5. Draw the isometric view of the object shown in Fig. 2. Fig. 2 CDC- DOTE ENGINEERING GRAPHICS II Page 8 of 9

ENGINEERING GRAPHICS - II MODEL QUESTION PAPER - 2 Time : 3Hours Max. Marks : 75 [N.B. (1) First angle projection is to be followed. (2) All the questions are to be answered in drawing sheet supplied. (3) All dimensions are in mm. (4) Credit will be given for neatness.] PART-A (Answer any three questions. Each question carries fifteen marks.) 3 X 15 = 45 1. A triangular pyramid of side of base 30 mm and height 60 mm is resting on its base on HP such that a triangular face is parallel to VP. It is cut by a plane perpendicular to VP, inclined at 30 O to HP and passing through a point on the axis 25 mm from the base. Develop the lateral surface of the truncated triangular pyramid. 2. Draw the projection of a cone of base diameter 50 mm and axis length 70 mm when it lies on the ground on one of its generators with the axis parallel to the VP. 3.. A triangular pyramid of base edge 40 mm and altitude 60 mm is resting on the HP on one of its base edges with its axis parallel to both the HP and VP. Draw its front and top view. 4. A cylinder of diameter 40 mm and height 60 mm rests on its base on the HP. It is cut by a plane perpendicular to the VP and inclined at 30 o to the HP. The plane bisects the axis. Draw the front view, sectional top view and true shape of the section. PART-B 5. Draw the isometric view of the object shown in Fig. 1. 30 marks Fig. 1 CDC- DOTE ENGINEERING GRAPHICS II Page 9 of 9